6121998122 has 4 divisors (see below), whose sum is σ = 9182997186. Its totient is φ = 3060999060.

The previous prime is 6121998109. The next prime is 6121998137. The reversal of 6121998122 is 2218991216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4773566281 + 1348431841 = 69091^2 + 36721^2 .

It is a super-2 number, since 2×6121998122² = 74957722011543053768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6121998122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1530499529 + ... + 1530499532.

Almost surely, 2^6121998122 is an apocalyptic number.

6121998122 is a deficient number, since it is larger than the sum of its proper divisors (3060999064).

6121998122 is a wasteful number, since it uses less digits than its factorization.

6121998122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060999063.

The product of its digits is 31104, while the sum is 41.

The square root of 6121998122 is about 78243.1985670320. The cubic root of 6121998122 is about 1829.3539003352.

The spelling of 6121998122 in words is "six billion, one hundred twenty-one million, nine hundred ninety-eight thousand, one hundred twenty-two".